Error “initializer element is not constant” when allocate the memory

Question

  1 #include
  2 #include
  3 
  4 typedef struct node_t{
  5     int i;
  6     struct node_t* link;
  7 }node;
  8 
  9 node* head =         


        

Answer 1

head is a global varibale. Global and static varibales must be initialized by constant expressions, i.e. literals. so you can't do

node* head = (node *)malloc(sizeof(node));